About GIS Switchgear is a protection device and is a combination of different types of components such as circuit breakers, current transformers, potential transformers, lightning arrestors, protection relays, and disconnectors arranged in a logical manner. They are used in transmission and distribution of electric power and effectively protect equipment and circuits from unregulated power spikes. On the basis of material used for arc quenching, switchgears can be classified as gas-insulated switchgears, air-insulated switchgears, oil-insulated switchgears, and vacuum-insulated switchge...more >>
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